- struct dmatest_chan *dtc, *_dtc;
-
- list_for_each_entry_safe(dtc, _dtc, &dmatest_channels, node) {
- if (dtc->chan == chan) {
- list_del(&dtc->node);
- dmatest_cleanup_channel(dtc);
- pr_debug("dmatest: lost channel %s\n",
- dev_name(&chan->dev));
- return DMA_ACK;
- }
- }
-
- return DMA_DUP;
-}
-
-/*
- * Start testing threads as new channels are assigned to us, and kill
- * them when the channels go away.
- *
- * When we unregister the client, all channels are removed so this
- * will also take care of cleaning things up when the module is
- * unloaded.
- */
-static enum dma_state_client
-dmatest_event(struct dma_client *client, struct dma_chan *chan,
- enum dma_state state)
-{
- enum dma_state_client ack = DMA_NAK;
-
- switch (state) {
- case DMA_RESOURCE_AVAILABLE:
- if (!dmatest_match_channel(chan)
- || !dmatest_match_device(chan->device))
- ack = DMA_DUP;
- else if (max_channels && nr_channels >= max_channels)
- ack = DMA_NAK;
- else
- ack = dmatest_add_channel(chan);
- break;
-
- case DMA_RESOURCE_REMOVED:
- ack = dmatest_remove_channel(chan);
- break;
-
- default:
- pr_info("dmatest: Unhandled event %u (%s)\n",
- state, dev_name(&chan->dev));
- break;
- }
-
- return ack;